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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00ccce31b0d7b1a9676f60f1693aed615c86618db1a7cce1102f9fd09dacc2de' 
  AND token = 'cF+sTJ7/s3hnRSFQ+Eukpuv4kfX6U1EAaRZx1PHXEPA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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