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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3325c3978bf5123da2edc7f839cc3f70997ab3115864a835f79ab69a4ba174dc' 
  AND token = 'afsniHcaTeBU1SiDSMpkWrMqXU6NUAUQ9E3Tmc8Zr/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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