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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '910c18e977065a1e8f02aa88d21511fcf2c6a0cd557d81e98cdd98391da1d9c7' 
  AND token = 'NYAs8UsXMkUUjiQ+Mhro0p4D5OhN1vK48frCEx1w3c0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}