Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08f53328de840b3a3db0bb241de06ac25c00c55bdc1a75161d74302a86e93b4c' 
  AND token = 'SPH7X+2t6JSS5m867C+sStu1cCgl0tRXbk6rTT0sKBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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