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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0d22440e999c610ce35ae760bcbc3f65125dc423bfc8e88ae40074d9856f67cb' 
  AND token = 'Ks1IVxTfJMzwNbu5FN301M0BE2www9w9+wTl5+P8Uao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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