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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04032e0e4302bcd726ef5b0e9af4a7ff22517e782bf688e6da68212560358f21' 
  AND token = '2fIlJReCtZtZXQ4R8FIaij1C+QutLFf+vHAySNqqLRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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