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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f76b4951f9196eb3c449ed06af5ea71e895a8093e26c9ac588d69e868d54f3ce' 
  AND token = 'qZGacLT5dc+JiokxgUy/UGTUHmp2nmdSJULUBx+DA3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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