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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c06fd00c58ffe13aee1d5624a46499a477cff0088119ec5cf77d9e52006b0094' 
  AND token = '4d7Xh47HZm0Dt6blyJAVujXKVNMg4BED6sB3JXV/C/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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