Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2eedec4a5bd59a0c2bf6a86c819ed38451b1c5689be4cd4a86c5ffbb39595f19' 
  AND token = 'qHnudEx7D2XLxExGnQ9X5sKNaEVO+Q5JgdqB2kMCmWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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