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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1a1e2db5776a2d24bc876399e58b7050378f78b34dce731fa4c3f0ec1308f32' 
  AND token = '22mHCRZ169Yk8OF2Ung5a6N1KX47kH0fvtq97tmp/54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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