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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '604ef0d53bf0d0e0a6a9e1d3e3df953ada18513d6bc0380dd236dfa4919eb4e1' 
  AND token = 'T5mcX7OWOSUcgDA2upr7xN8Xx7GRk8BdtrvXyrR0ElM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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