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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d24627a9cb06987cfe6ae3a22e9bfef78bf3aaf37b411f822e12c5c7642dba2' 
  AND token = '0hgamM0QSV5dwL1EIAkTN66jWswZwv2I3YD5wGXMpfA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}