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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce3fcf1317fa111a9c34969615bae6c362d4ad55733aebb9f40719e962213e8a' 
  AND token = 'yikhlGTpa9EB0usB+5Thyyg2B+gaU3V0LiYO7rt6T9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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