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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd047c5c3c980cfca26e75ff0f149a86883fe7fafc8ba1e883491c2cbadf3fb17' 
  AND token = 'iyE2mNXZX6UuF6glIQxz91Jy0tp4C3prE1mbBaw4mmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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