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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cca12f8437fdf712263a528642765ceca792fff6be3af4df6cca824b83f1af2d' 
  AND token = 'j5P7rJlu4enPvyQ9cZ8r4B2uvCAk3SVRc1gRYZEUP9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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