Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e2d3ee95ab019dab7c9a3ff6da586637a4173764386215ea51a211a025505ac' 
  AND token = 'XZfaNizThRlfKdilT1gIaPipx6VykMo06uPN2IIj0Wk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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