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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0275195c09bfbab489fff2164a724ac5aaf48f6d022a53fa9e30e42d3e3b6ed3' 
  AND token = 'cElBjODUOPaD+a2+i4xV0ae3MXGVdL+t8gln/zQ7N9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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