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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95d92f646a97a77a6b225b4027583b07652ad18fc1a69c07b1725d46ea0e8f17' 
  AND token = 'D3Vr3v2fIWEldgGFswFVZcVgOOqAivQmAokTyMD7sRk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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