SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67b0ef5a49355d2fcd94369c0e01c06316c7496be6b9b61d45b93177a7ef7a26' 
  AND token = 'W8YsJFvmDVeJji5I/aKNIdojV18fXnhLzmZwKXIwBiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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