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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2619ed0d4ceaa107a584cc5f1b071300962349f78141d27a6ee268dcb8fc8486' 
  AND token = 'GL/cRh0Jxj8hRAjkvJdDcJNvClH67mC2LOgtYQ1UqX8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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