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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4af386e441b5acb73de52382a8a21ee6149bff8da0b907fef7b83054f210749c' 
  AND token = 'wL7s6Qp6f2jQC4LJbtBH6OHra3Uia7tWQLq4ToA7q88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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