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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8eb302335d037143038c25a60144fc8685c17328809bfc43515c03edfd3b9f32' 
  AND token = '4oIoHoNVlCafA1CPqNlVj/7rueGGlmW6LUuxvATFeNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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