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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd7680921762b2941a44853897b7c7fc6c0a5d31de8aa9d35fd0194ad3fb1355' 
  AND token = 'Hs5NXzXEbFY4m/e0ikIYrpkfe48Cn2OowB6RQaaRKGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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