Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf51371c600b6ad27bb9ae293ac0b62ce6d376ffe442b06136362ccac2d1b6db' 
  AND token = 'Cw/K+1450lZRiWKUyfat0LJkYWDq2m250RKLVedEYzQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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