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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '24ae7e7b4a21872bea265b9bff9f1e7ce33559beba26c37fb674deaeab614e70' 
  AND token = 'g9U2s513yRENBv8CXJIpfGyaoS8akuBrXhpf0Em+6ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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