Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b83fbaa00e0716b5f9b3b00ebff96583494c3e5f6874533961239f5dc26f6177' 
  AND token = '+q17mEjdWfsM4r1OvPNDakwgNtaOqH0bM5Cr0TMsPAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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